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Weather in September in New Hampshire

Thinking about venturing to New Hampshire this September and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in New Hampshire in September?

New Hampshire is a region in the United States of America. September in New Hampshire generally has temperatures that range from pleasant to warm, with precipitation levels ranging from moderate to high.

Temperatures

The average highest temperatures fluctuate between pleasant in Waterville Valley at 19°C to warm in Nashua at 24°C. Nighttime temperatures generally drop to 11°C in Nashua and 8°C in Waterville Valley.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in West Lebanon with an average of 78 mm to high rainfall in West Chesterfield with 112 mm. Looking at the climate data spanning the last 30 years, this month usually has the lowest rainfall in Hampton Beach, marking it as the year's driest month.

Average sunshine

The city Hampton Beach usually sees around 238 hours of sunlight, indicating many sunny days.

To learn more about the conditions in specific areas of New Hampshire in September, check out the map below. For more details on the yearly weather, visit our New Hampshire climate page.

Where to go in New Hampshire in September

Find more information for the most popular destinations in the New Hampshire on the map below. Click on a destination dot for more detailes.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in September for the 5 most popular destinations in New Hampshire?

Hampton Beach

In September Hampton Beach generally has high temperatures with maximum daytime temperatures around 22°C, minimum nighttime temperatures around 12°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Hampton Beach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
26°C 
15°C 
280 hours 
106 mm 
10 days 
22°C 
12°C 
238 hours 
84 mm 
10 days 
October   >> October
>>  
16°C 
6°C 
207 hours 
122 mm 
14 days 
Climate in Hampton Beach

Portsmouth

In September Portsmouth generally has high temperatures with maximum daytime temperatures around 23°C, minimum nighttime temperatures around 12°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Portsmouth
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
26°C 
16°C 
261 hours 
102 mm 
10 days 
23°C 
12°C 
214 hours 
96 mm 
9 days 
October   >> October
>>  
16°C 
6°C 
183 hours 
116 mm 
13 days 
Climate in Portsmouth

Manchester

In September Manchester generally has high temperatures with maximum daytime temperatures around 24°C, minimum nighttime temperatures around 11°C and high monthly rainfall. So on average the conditions are pleasant that month.

Manchester
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
27°C 
16°C 
261 hours 
106 mm 
11 days 
24°C 
11°C 
214 hours 
100 mm 
10 days 
October   >> October
>>  
16°C 
5°C 
183 hours 
114 mm 
12 days 
Climate in Manchester

Nashua

In September Nashua generally has high temperatures with maximum daytime temperatures around 24°C, minimum nighttime temperatures around 11°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Nashua
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
28°C 
16°C 
261 hours 
100 mm 
11 days 
24°C 
11°C 
214 hours 
89 mm 
10 days 
October   >> October
>>  
17°C 
5°C 
183 hours 
125 mm 
13 days 
Climate in Nashua

Weirs Beach

In September Weirs Beach generally has high temperatures with maximum daytime temperatures around 22°C, minimum nighttime temperatures around 11°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Weirs Beach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
26°C 
14°C 
261 hours 
109 mm 
11 days 
22°C 
11°C 
214 hours 
96 mm 
11 days 
October   >> October
>>  
15°C 
5°C 
183 hours 
133 mm 
13 days 
Climate in Weirs Beach

Is your destination not in the list? Have a look at other destinations in New Hampshire, in the United States of America.

Is September the best time to visit New Hampshire?

We consider September to be one of the best times to travel to New Hampshire. Typically, the climate in Hampton Beach is perfect. However, the weather conditions may vary depending on your destination.

On average, the best time to visit New Hampshire is in September with generally perfect weather in Hampton Beach. On the other hand, the months of January, February, March, April, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in New Hampshire. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.